Aluminum-containing cold forging steel acid-soluble aluminum control method

Abstract

The invention provides an aluminum-containing cold forging steel acid-soluble aluminum control method, which relates to the technical field of steel smelting and comprises the following steps of converter steelmaking, deoxidation alloying, argon blowing in an argon blowing station, LF furnace refining, calcification treatment, protective pouring and continuous casting control. According to the method, the high-aluminum ferromanganese is adopted to replace ferromanganese and aluminum wires for molten steel deoxidation and alloying, the content of acid-soluble aluminum in the molten steel is directly increased through the high-aluminum ferromanganese, aluminum wire feeding or aluminum wire non-feeding in an argon blowing station is reduced, the production efficiency is high, the adding amount of the high-aluminum ferromanganese is calculated and determined according to the requirements of converter end point oxygen and acid-soluble aluminum components of the incoming molten steel, in the converter tapping process, high-aluminum ferromanganese and low-carbon ferromanganese are added into a molten steel tank, molten steel deoxidation is achieved, the requirement for the acid-soluble aluminum content of molten steel entering a station is met, and after the molten steel enters an argon blowing station, aluminum wire feeding can be reduced or aluminum wire feeding can not be achieved.

Description

Technical field [0001] The present invention relates to the field of smelting steel, and in particular, to a method of aluminum-containing cold-aluminum-free aluminum-free aluminum control. Background technique [0002] The converter smelting aluminum-free steel, since the steel is required to be high in the steel, the original process is that deoxidation and alloying in the converter workshop, the acid solubility is mainly achieved by feeding aluminum wires in the refining workshop, that is, the finite component of the converter When the temperature is in line with the steel processes, the steel jug is added to the steel jug to the steel jug for deoxidation and alloying, and aluminum manganese is mainly dehydrate, which is not to increase the aluminum of steel, then the steel After entering the argon station, the amount of aluminum wire is determined according to the amount of aluminum-free aluminum in the steel oxygen and argon, and the amount of aluminum wire is fed into a lar...

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Problems solved by technology

[0003] However, this technology has the following defects and deficiencies: 1. Feeding a large amount of aluminum wires takes up the time of the argon blowing station and prolongs the production cycle;

[0004] 2. After a large amount of aluminum wire is fed to increase acid-soluble aluminum, since the oxygen content in the slag is still high, the loss of acid-soluble aluminum in molten steel is relatively large, and the acid-soluble aluminum in molten steel decreases;

[0008] 6. The molten steel enters the argon-blowing station and needs to carry out oxygen-fixing detection, which increases the oxygen-fixing cost of the argon-blowing station. Therefore, the present invention proposes a control method for acid-dissolving aluminum in aluminum-containing cold heading steel to solve the problems existing in the prior art

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